We've seen a lot of amazing concepts for urban gardens — green-roofed cities, gardens that stretch high into the clouds — but this pair of vertical forests is more than just a concept design. It's currently being built in Milan.

The brainchild of architect Stefano Boeri, Bosco Verticale (simply "vertical forest") is currently under construction in the form of two residential towers. The goal of Bosco Verticale is not only to beautify the cityscape, but also contribute to the creation of an artificial microclimate and improve air quality:

The Bosco Verticale is a system that optimizes, recuperates and produces energy. The Bosco Verticale aids in the creation of a microclimate and in filtering the dust particles contained in the urban environment. The diversity of the plants and their characteristics produce humidity, absorb CO2 and dust particles, producing oxygen and protect from radiation and acoustic pollution, improving the quality of living spaces and saving energy. Plant irrigation will be produced to great extent through the filtering and reuse of the grey waters produced by the building. Additionally Aeolian and photovoltaic energy systems will contribute, together with the aforementioned microclimate to increase the degree of energetic self sufficiency of the two towers.

It's so lovely to see one of these projects actually coming to fruition. Perhaps this sort of preplanned urban landscaping will start a trend.